1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2827d25a60c940648313e624218b376cb537e6ad25b4a737d57c08a83c84c655. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2abd42f1-177d-4e18-92e8-d61c91d01a13.json and https://artists.proofprofile.net/proofs/artist/2abd42f1-177d-4e18-92e8-d61c91d01a13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e49d1c00d6fc5d1a58816625ed55f88f1e78d64378006b3d4241ed4e4cbe7df. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJX32266202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6554b208337e7645abda5f3028b22e70153f2f820d173c5f4527dab0340552. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJX32266203.
Juicy Bitch (Marlon Hoffstadt AKA DJ Daddy Trance Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6cea84fe2af9a40d3356e51586133ef73a786ea34c3f0a9e7845f4968e6866. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYBL2300663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88441b583b3df59cc42fe72d1c6e661eb26c7278c464457a6919eddd2d6aaca6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US23A1568626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e91685020c7212847464bb7e21a7ff5d704bfdc3a7a23bbad428cda64fc888f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYBL2402271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae9871f1593a00a10e9abf61da20110ecc76efa5da8a3c496dc8bf26258018. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYBL2402272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c92c9638133eea132fa3071295252502e9a3ebbd175b31de1c249a6d60ea95. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBUM72300599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8bd6befa0223e6450aaa559451db7a29e86b78f1d11bd5d71d0c3f29e4336b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2009224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb728211b43fece4d314211a1e07a71d68f92f340c25d3ea533a44c88cf08a8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22409202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c055efa35fbc52678412d40eb7b9c2a8ae88a99c76202a24c94bd45c360682. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22409198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4251153ef6cfea7bc816441f0ada54493b19727bbb9a80610280b06e9de7989. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22409200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44b3aadae36ebfc48aa4d945e84fee6ac7d29407660fe08b68c9f001844af51. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22409201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8bd6befa0223e6450aaa559451db7a29e86b78f1d11bd5d71d0c3f29e4336b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2009224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6e62fa30be883be7b3f3d93ed1dd128f6398eaab4fb22cec9e579c2fa18fed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVH21800660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6e62fa30be883be7b3f3d93ed1dd128f6398eaab4fb22cec9e579c2fa18fed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVH21800660.